title: Tree rings as Pb pollution archives? A comparison of 206Pb/207Pb isotope ratios in pine and other environmental media.
mesh_terms: D001272:Atmosphere; D004787:Environmental Pollution / Q000032:analysis*; D007554:Isotopes; D007854:Lead / Q000032:analysis*; D028223:Pinus / Q000737:chemistry*; D012107:Research Design; D012987:Soil / Q000032:analysis*; D013548:Sweden; D014197:Trees / Q000737:chemistry*
chemical_list: D007554:Isotopes; D012987:Soil; D007854:Lead